My older son plays minor hockey. The way they have it set up is there is a rotation of 4 practice times where each week the team gets one of the four practice slots in turn.
This past weekend his team had the Sunday morning 6 AM practice time. We made it on time but I found it hard to get up and get there. I had to take a couple of short naps during the day Sunday to recover. My son was very good to get up and he awoke right when I called him.
He had a second group practice for goalies as well at 12 noon. He went to that practice as usual but he was a bit sluggish. I think the early morning caught up to him a bit.
The 6 AM practices are part of hockey. I had them when I played when I was young. They are hard to get awake and moving for. I'm glad he only has them every fourth week.